I think 1680 resolution medium quality + some full would be the sweet spot.

Depends on resolution, AA, grids
If you willing to sacrifice a bit from each I do not think you will have much trouble

I ran a single GTX460 superoverclock with 4.5GHz Sandy, used high settings less bloom, etc. and got 40+ minimum with Spa "oldies"

If you got a fast GTX560Ti like OC model you would make up a bit on me and lose a bit with Duo
actually if you check tests like say 1680 medium res no AA they are not that much slower then a stock 2500K in games but get well beat in almost everything else worth note.

I be worried about the Power Supply you want a solid 12volt rail with proper 6pin connector.

Not saying you cant get away with that PSU but you want to check the sticker and/or specs on website before you commit.

this pc costs £240.00, what one would you recommend ? (i only have been looking @ these pc's as they seem like a good price, plus i only have £250.00, also are Xeon dual core pc any good for racing sims ?

Hi DurgeDriven
thank you for advice, im not 100% sure of what power supply it is as i dont own that system, but have seen one for sale for just under £200, here are the auctul full details of it:
this pc costs £240.00, what one would you recommend ? (i only have been looking @ these pc's as they seem like a good price, plus i only have £250.00, also are Xeon dual core pc any good for racing sims ?

thanks again.

Well I very much doubt the Power Supply will be sufficient for a GTX560Ti

As is the 3D power would not pull the skin off a rice pudding so you will not be able to run any sim
let alone rFactor2 till you get the new video card and most likely power supply.

I am reticent to give you any advice past save some more money and find someone with
good knowledge and no motives to build you one.

Like I said if ...IF... the power supply and case support the GTX560Ti
it would most likely be okay ie: till you upgrade to new tower that is ?

Like if the GTX560Ti is the only upgrade you think you doing I do not think it is worth it.

Simply because you will loss a big part of the perfomance from it using a slower Processor
thus drastically lowering the bang for buck factor.

P.S. I not sure ....if you have the money for the GTX560Ti plus that tower I would buy something like this ( £220.00 ) and a GTX560Ti and put it all in the cupboard and look at the boxes, I have done this.

Then do whatever you have to buy the Processor and Motherboard, you tend to waste less money on other "stuff" and save a bit more.
That way you can also change your mind on AMD or Intel as the memory will work on either.